Channel: ScannerDanner

Category: Autos & Vehicles

Tags: technician trainingrosedale techfuel pump currentp0171fuel trimp0174diy auto repairhow-tolow fuel pressurefuel pumpleanscannerdanner premiumase l1auto technician trainingautomotive electrical systemsengine performance diagnosticsdiagnostic trainingauto mechanic trainingfuel pressure testvacuum leakcheck engine lightauto repairtroubleshooting electrical faultsdirty throttle bodyauto mechanicsonline auto mechanicslow power

Description: Link to part 2 (the follow up) youtu.be/yw1-zlFuXZ4 2007 Chevy Suburban 5.3L with lean conditions from a fuel pressure issue and a vacuum leak, a dirty throttle body causing false TPS code P0121, and a charging system issue. If you are not careful with a job like this, it can end up costing you money. Symptoms: Long crank time, low power, backfiring through the intake, stalling, battery light on :40 symptoms and customer complaint 2:18 what I think the problems are 3:36 code list and freeze frame data 5:05 long crank time 5:30 fuel trim data and O2 analysis 7:14 test drive to look at O2 at WOT 9:17 backfiring though the intake 9:33 forced open loop condition, fixed lean O2, how to test the O2 during this condition (do we have a mixture problem or O2 problem) 11:09 checking fuel pump current with a lab scope #uTestTerminalKit #AESwave 14:30 fuel pressure testing 17:15 addressing idle lean condition and TPS code 20:33 fuel pressure spec 23:35 fixing the TPS code/identifying and cleaning a dirty throttle body 29:14 reviewing the conditions and what we found with my brother 32:20 checking for a vacuum leak 33:05 why communication is the key 34:19 fuel psi dropped 2 psi when fans came on 35:10 idle relearn procedure 37:05 why it ran better in closed loop and after the codes were cleared ScannerDanner Tools: scannerdanner.com/tools.html amazon.com/shop/scannerdanner For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere! Disclaimer: Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.